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    <title>ECharts · Example</title>

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        <div class="row-fluid example">
            <div id="sidebar-code" class="col-md-4">
                <div class="well sidebar-nav">
                    <div class="nav-header"><a href="#" onclick="autoResize()" class="glyphicon glyphicon-resize-full" id ="icon-resize" ></a>option</div>
                    <textarea id="code" name="code">
option = {
    legend: {
        orient: 'horizontal', // 'vertical'
        x: 'right', // 'center' | 'left' | {number},
        y: 'top', // 'center' | 'bottom' | {number}
        backgroundColor: '#eee',
        borderColor: 'rgba(178,34,34,0.8)',
        borderWidth: 4,
        padding: 10,    // [5, 10, 15, 20]
        itemGap: 20,
        textStyle: {color: 'red'},
        selected: {
            '降水量' : false
        },
        data: [
            {
                name:'蒸发量',
                icon : 'image://../asset/ico/favicon.png',
                textStyle:{fontWeight:'bold', color:'green'}
            },
            '降水量','最高气温', '最低气温'
        ]
    },
    xAxis :{
        data : ['周一','周二','周三','周四','周五','周六','周日']
    },
    yAxis : [
        {
            type : 'value',
            axisLabel : {
                formatter: '{value} ml'
            }
        },
        {
            type : 'value',
            axisLabel : {
                formatter: '{value} °C'
            },
            splitLine : {show : false}
        }
    ],
    series : [
        {
            name:'蒸发量',
            type:'bar',
            data:[2.0, 4.9, 7.0, 23.2, 25.6, 76.7, 135.6]
        },
        {
            name:'最高气温',
            type:'line',
            yAxisIndex: 1,
            data:[11, 11, 15, 13, 12, 13, 10]
        },
        {
            name:'降水量',
            type:'bar',
            data:[2.6, 5.9, 9.0, 26.4, 28.7, 70.7, 175.6]
        }
    ]
};
// 动态添加默认不显示的数据
var ecConfig = require('echarts/config');
myChart.on(ecConfig.EVENT.LEGEND_SELECTED, function (param){
    var selected = param.selected;
    var len;
    var added;
    if (selected['最低气温']) {
        len = option.series.length;
        added = false;
        while (len--) {
            if (option.series[len].name == '最低气温') {
                // 已经添加
                added = true;
                break;
            }
        }
        if (!added) {
            myChart.showLoading({
                text : '数据获取中',
                effect: 'whirling'
            });
            setTimeout(function (){
                option.series.push({
                    name:'最低气温',
                    type:'line',
                    yAxisIndex: 1,
                    data:[-2, 1, 2, 5, 3, 2, 0]
                });
                myChart.hideLoading();
                myChart.setOption(option);
            }, 2000)
        } 
    }
});
             
                    </textarea>
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